A car travels 100 meters in 5 seconds. What is the speed of the car?

speed = distance over time; 1 mile = 1609 meters

8.9 miles per hour

16 miles per hour

20 miles per hour

44.7 miles per hour

Question

A car travels 100 meters in 5 seconds. What is the speed of the car?

speed = distance over time; 1 mile = 1609 meters

 8.9 miles per hour

 16 miles per hour

 20 miles per hour

 44.7 miles per hour

anonymous · Answer

do you know the equation for linear speed?

anonymous · Answer

sorry, of course you do silly me

anonymous · Answer

first find out how many meters that is

nurali · Answer

So how much is 100m in miles?? 
100/1609 right? :D
And how much is 5 seconds in hours?
5/3600 right? :D
So miles/hour = 

$$\frac{ 100 }{ 1609 }*\frac{ 3600 }{ 5 }$$

44.7 miles

anonymous · Answer

what naruli said is the better answer

anonymous · Answer

I learned it wrong, and I still have to remember when it is a good time to use fractions or decimals. Fractions are better here.